Yocto meaning

yäktō, yäktə
One septillionth (10−24 ).

Yoctosecond.

prefix
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One septillionth part of; the factor 10-24

Yoctosecond.

affix
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Septillionth (10 to the -24th power). See space/time.
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Origin of yocto

  • < octo-: because the number is 10-3 to the eighth power

    From Webster's New World College Dictionary, 5th Edition

  • Alteration of octo– (from its representing the eighth power of a thousandth)

    From American Heritage Dictionary of the English Language, 5th Edition